How can you use a bar diagram to check the accuracy of the solution to a ratio or rate problem

Abby is preparing fruit punch for her party. she starts with a bowl filled with liquid that has 1/2 fruit juice and 1/2 sprite, but she decides it's too fruity. so she pours out 1/4 of the liquid, and then fills the bowl up again with sprite. what fraction of the punch is now sprite?

How are sas and sss used to show that two triangles are congruent?

Why is causation so much more difficult to prove than correlation?